We have seen hundreds of promotional items for Walt Disney's live-action film The Story of Robin Hood and his Merrie Men (1952). Many of them are on this blog and can be seen by clicking on the label 'Film Promotion' and 'Memorabilia.'
When a new Disney film was released, every form of advertising was used. Toys, books, clothing, games, sweets, records etc. Above is unusual stationery from Portugal, which I presume you would describe as a letterheading. Below Maid Marian (Joan Rice) and Robin Hood (Richard Todd) is O Fidalgo Dos Bosques, ' The Nobleman of the Woods'.